Uses of Argon

argon lightbulb

Argon is used in incandescent lightbulbs
Argon is used as an atmosphere when arc-welding alluminum and stainless steel, as well as growing crystals for semiconductor industry
You can use a process called Potassium-Argon dating to date rocks
You can find Argon in radio tubes and geiger counters
Also used in argon ion lasers